F9 1578 then AA 9950 at Philadelphia
Fort Myers → Philadelphia → Chicago O'Hare
Timetable, Philadelphia time
15:39F9 1578 from Fort Myers at the gate
13:01AA 9950 to Chicago O'Hare leaves the gate
21 h 22 apart on the timetable, overnight
AA 9950 leaves 21 h 22 after F9 1578 arrives on the timetable: more than half a day, so not a connection we count.